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BUILD: LOVABLE DEMONSTRATION RESCUE

Booking App

Booking app — rescued in 52 hours.

Lovable React Supabase Stripe
WHAT WE FOUND
Payment secret key shipped to browsers
Two people could book the same slot
Forms accepted anything, validated nothing
Get the same rescue
Booking App
33before
→
91after
RESCUED IN 52 HOURS

How We Fixed It

1

Ran the free scan

Flagged the live Stripe secret key in the frontend bundle as the top critical finding.

2

Rebuilt payments server-side

Moved charge creation behind a signed backend webhook and rotated the exposed key.

3

Added a real booking lock

Added a database-level constraint so two people can no longer reserve the same slot.

4

Added input validation

Every form now validates and rejects malformed input instead of accepting anything.

Results

Stripe key rotated and moved fully server-side
Double-bookings no longer possible — enforced at the database level
Every public form now validates input
Launch Readiness score up from 33 to 91
A booking app for a small studio business, built fast to validate the idea — but the Stripe secret key was bundled straight into the frontend, and there was no locking mechanism around slot booking, so double-bookings were a matter of when, not if. We moved payment handling behind a proper server-side webhook, added a booking lock with database-level constraints, and added real input validation across every form. Launch readiness went from 33 to 91 in 52 hours.
“

We were three days from opening bookings to the public with a live Stripe key sitting in plain sight. They caught it, fixed it, and explained exactly what happened in language I could actually understand.

— OWNER, BOOKING APP

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